Codegen struggling to recognize module atrtribute access as a usage #242

When using codegen to remove dead code, it incorrectly identifies functions accessed via module attribute notation as unused.

Example:

file: example.py

from a.b import module
module.some_func() # this usage is not detected

In the dead code script:

some_func.usages # Returns []
some_func.call_sites # Returns []
some_func.symbol_usages # Returns []

As a result, some_func is incorrectly identified as dead code and removed, despite being actively used through module attribute access.

Expected Behavior:

• some_func should show usage when accessed via module.some_func()